i open up a support case at Microsoft now and then. Normally i get a call within 5hours. But normally my day is packed with tasks, meetings and installations.
And normally i get the call when i'm doing something else.
I know that during Corono times it is difficult to schedule a time. But it would be great if the first response would be a mail to schedule a time to proceed with the problem by phone. Or maybe there are already some answers that can be answered by mail.